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powerpc/booke: Add Stack Marking support to Booke Exception Prolog
This patch adds a marker to the exception stack frame to aid in debugging. It's already inserted on other platforms and xmon recognizes it and identifies exception frames when showing stack traces. Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
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@ -1,6 +1,7 @@
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#ifndef __HEAD_BOOKE_H__
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#define __HEAD_BOOKE_H__
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#include <asm/ptrace.h> /* for STACK_FRAME_REGS_MARKER */
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/*
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* Macros used for common Book-e exception handling
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*/
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@ -48,6 +49,9 @@
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stw r10,0(r11); \
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rlwinm r9,r9,0,14,12; /* clear MSR_WE (necessary?) */\
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stw r0,GPR0(r11); \
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lis r10, STACK_FRAME_REGS_MARKER@ha;/* exception frame marker */ \
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addi r10, r10, STACK_FRAME_REGS_MARKER@l; \
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stw r10, 8(r11); \
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SAVE_4GPRS(3, r11); \
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SAVE_2GPRS(7, r11)
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